256761344

素因数分解:

$2^9\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2311}}^1$

素因数の和:2367

約数の個数: 80

約数和(自身を含む): 605485056

約数和(自身を除く): 348723712

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 256, 434, 448, 496, 512, 868, 896, 992, 1736, 1792, 1984, 2311, 3472, 3584, 3968, 4622, 6944, 7936, 9244, 13888, 15872, 16177, 18488, 27776, 32354, 36976, 55552, 64708, 71641, 73952, 111104, 129416, 143282, 147904, 258832, 286564, 295808, 501487, 517664, 573128, 591616, 1002974, 1035328, 1146256, 1183232, 2005948, 2070656, 2292512, 4011896, 4141312, 4585024, 8023792, 8282624, 9170048, 16047584, 18340096, 32095168, 36680192, 64190336, 128380672, 256761344]

約数ペア:

[(1, 256761344), (2, 128380672), (4, 64190336), (7, 36680192), (8, 32095168), (14, 18340096), (16, 16047584), (28, 9170048), (31, 8282624), (32, 8023792), (56, 4585024), (62, 4141312), (64, 4011896), (112, 2292512), (124, 2070656), (128, 2005948), (217, 1183232), (224, 1146256), (248, 1035328), (256, 1002974), (434, 591616), (448, 573128), (496, 517664), (512, 501487), (868, 295808), (896, 286564), (992, 258832), (1736, 147904), (1792, 143282), (1984, 129416), (2311, 111104), (3472, 73952), (3584, 71641), (3968, 64708), (4622, 55552), (6944, 36976), (7936, 32354), (9244, 27776), (13888, 18488), (15872, 16177)]